Brake-by-Wire Wheel Slip Control With Real-Time Parameter Loading

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Solution Overview

Problem

Existing braking systems with B-b-W technology lack optimal methods for controlling wheel slip, limiting optimization and flexibility, and require empirical tuning techniques.

Innovation Solution

A method and system for controlling wheel slip in a vehicle braking system with B-b-W technology, utilizing a slip control module that receives vehicle information to send braking requests to actuator modules, enabling decentralized or centralized configurations, and employing software modules for real-time control adjustments based on wheel and vehicle status.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional braking systems with numerous valves and discrete-cycle control algorithms are used, then the system structure is well-defined, but the wheel slip control optimization and flexibility are limited

Engineering Contradiction:

Improvewheel slip control optimization and flexibilityVSAvoidsystem architecture complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent replaces traditional mechanical valve-based braking systems with an electronic B-b-W (Brake-by-Wire) system. The electro-mechanical or electro-hydraulic actuators electronically control the braking action, eliminating the need for numerous physical valves and enabling continuous force modulation through electronic signals, thereby achieving superior optimization and flexibility in wheel slip control

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent implements dynamic control by allowing the braking force to be continuously modulated in real-time based on wheel slip conditions. The system transitions from discrete-cycle control to continuous dynamic adjustment, where the actuator force is constantly optimized according to current wheel and vehicle status, enabling adaptive wheel slip control

Inventive Principle:

Principle #15Dynamics

2Productivity

If B-b-W technology with electro-mechanical or electro-hydraulic actuators is implemented, then continuous force modulation capability is achieved, but optimal wheel slip control methods are lacking

Engineering Contradiction:

Improvewheel slip control performanceVSAvoidcontrol method implementation

Core Design Contradiction:

ProductivityVSEase of manufacture

Solution Approach 1:

The patent implements a feedback control mechanism where the system continuously monitors wheel slip conditions and vehicle status, then adjusts the actuator force accordingly. The control method uses real-time feedback from wheel speed sensors and vehicle state information to optimize braking force, ensuring optimal wheel slip control performance while providing a systematic implementation approach

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent optimizes wheel slip control by dynamically changing control parameters such as actuator force, braking pressure, and control cycle frequency based on real-time wheel and vehicle status. The system adjusts these parameters to achieve optimal braking performance across different operating conditions, providing a adaptable control method for B-b-W systems

Inventive Principle:

Principle #35Parameter changes

3Speed

If discrete-cycle control algorithms are used in traditional braking systems, then the control logic is simple, but the responsiveness and braking comfort are limited

Engineering Contradiction:

Improvecontrol responsivenessVSAvoidcontrol algorithm complexity

Core Design Contradiction:

SpeedVSDevice complexity

Solution Approach 1:

The patent transitions from discrete-cycle control to continuous control action. The electro-hydraulic or electro-mechanical actuators provide continuous force modulation rather than intermittent braking applications, maintaining constant control over the braking force. This continuous action significantly improves control responsiveness and braking comfort while managing algorithm complexity through efficient real-time computation

Inventive Principle:

Principle #20Continuity of useful action

Data Source

PatentUS12466369B2Method for controlling the wheel slip in a braking system with B-b-W technology of a vehicle and system thereof

Publication Date: 2025.11.11 FRENI BREMBO SPA

AI summary

A method for controlling wheel slip in a braking system of a vehicle includes receiving, by an input interface module of a slip control module, information representative of the vehicle and information representative of an estimate of the status of the vehicle, outputting, by the input interface module, input wheel slip control information, determining, by a parameter self-loading module, based on information representative of the vehicle and information representative of an estimate of the status of the vehicle, wheel slip control parameters, determining, by a plurality of wheel slip control enabling modules of the slip control module, a plurality of enabling signals of the wheel slip control, and determining, by each closed-loop wheel slip control module of a plurality of closed-loop wheel slip control modules of the slip control module a setpoint value of a control variable to be applied to a respective corner of the vehicle to minimize error between the defined slip setpoint and the estimated wheel slip value.